Improvement in tire-upsetting machines



UNiTED STATES:

PATENT OFFICE- L. A.. Donn, on SALEM, onto, Assienoa To HiMsnLF Annan snivnn.

.IMPROVEMENT IN TIRE-UPSETTING MACHINES.

Specification forming part lof Letters Patent N0. 41,257, dated January lf2, 18H/l.

To. all -whom, it may concern:

Be it known that I, L. A. DOLE, of Salem,

county vof Columbiana, State of Ohio,A have invented a new and Improved Machine for Upsetting Tires; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of thisspeciiication, in which- Figure l is a perspective view of my improved machine, showing the manner ofcoufining the tire therein. Fig. 2 is a top view of Fig. 1'. Fig. 3 is a section through Fig. 2, taken in the vertical plane indicated by the course of red line-:r x. Fig. is a transverse section through the machine, taken in the vertical plane indicated byl red line y y, Fig. 3.

" 'Figg 5 is. aperspective viewof one of the keyretainers.

Similar letters of reference indicate corresponding parts in the several iigures.

This invention is an improvement on that class of tire upsetting or shrinking machines wherein the tire is confined in place on an anvil by means of wedges or keys, which bite and hold the tire and prevent it from slipping during the operation of upset-ting the metal.

rlhe object of my invention is to combine Wrought-metal key-1etainers,which are adapted for receiving keys for confining the tire in placeon the anvil, with a cast-metal anvil in such manner that the loopedportions of said key-retainers shall be embedded in. the body of the anvil, and by this means secured rigidly and permanently in place, therebyrobtaining the advantage of a cheap cast-metal anvil,

with key-retai ning loops which possess greater tenacity and capability of withstanding the concussions to which they are subjected than the metal of which the anvil iseomposed, as will be hereinafter described.

To enable others skilled in the art to makev and use my'inventiom will proceed to describe its construction and operation.

In Figs. 3 and 5 of the accompanying drawings I have represented the key-retainers AA A A, which are constructed by bending a wroughtmetal bar in the shape represented in said figures, and then welding the two ends of the bar together. This form gives a slotted contracted portion, a, for receiving the keys, enlarged at itslower end into an open circular portion, b. Four ofA these ieyiretainers Aare set up in a suitable mold, so that they'will occupy the relative -positions represented in the mold, so as to coinplctel y envelop thelo'wer or circular p0rtions,.b, of these key-retainers,

sectional Figs. 3 and 4. is formed so as to produce an anvil having a longitudinally-concave upper face adapted for receiving the circular tires, and also eye-lugs fine the machine down on a suitable bed. I thus obtain the strength of asolid wroughtmetal anvil having. key-retainers formed of one homogeneous piece. while I obtain the additional advantage of having the body of the machine or anvil composed of a metal which,vvhile it does not possess the strength or tenacity required for the key-retainers, will answer every purpose as an anvil when wroughtmetal loops or Vkey-retainers are combined four wrought-metal key-retainers A are arranged in pairs, vso that each pair will receive through them a key, g, which passes transversely across the anvil B, and contines the tire.down on the surface thereof, as will be hereinafter described. Between each pair of key-retainers a space is left of sufficient width to receive the widest tire, for the purpose of allowing the wedge-keys to press it down upon thereon. These key-s should be made of steel,

end to the other, and one ofthese edgesshould be beveled, so as to form a V edge for biting into the metal of the tire, and thus holding it more iirmly in place on the anvil.

an intermediate point between these retainers,

passed and driven uphard, thus securing the tire downen the face of the anvil` onA each side of the bend in the tire, so that it cannot slip in either direction. It is only required Figs. l, and 2, and cast metal is' poured "into and thus to form an anvil, B, in which theV retainers are embedded, as represented 1n the rlhe mold or matrix c c, for receiving bolts,which are used to conwith it in the manner above described. rIhe the face of the anvil, and to hold it rigidlyv having their narrow edges tapering from one The method 0f shrinking a tire with my through which latter the wedge-keys are newr now to hammer the bend in the tire down-Ha*4 l receiving. another.

There is ,a great advantage in the use of key receiving` and retaining loops which project from the face of the anvil, as I have above described, for it will be seen that with such pro-I in place fiatjections the tire can be secured wise on the anvil by means of keys passing over and pressing down on the inside surface ofthe tire. The keys will thus act .upona much greater surface than where they are einployed for gripping` the edges ofthe tire, asin the patent of Leonard Kyle, numbered 27,813 an advantage which will be appreciated when itis understood that tires only vary about the half of an inch in thickness, while they vary three inches in width. This and other advautages derived from confining the tire by means of keys passing through loops, as above de scribed, makes it desirable to' employ these loops, which can only be done practically by making them of a very tenacious metal which will withstand the shocks and concussione of 'metal loops A, applied to driving the wedges suiciently tight to make them serve their purpose.

By my invention I am enabled still to usea cheap cast-metal anvil, and to obtain all the required strength of keyretainers, thus making available and useful an article which would be thrown aside as useless if made wholly .of a cast or brittle metal.

Having thus described my invention, what I claim as new,` and desire to secure by Letters Patent, is-

1. Making the wrought-metal key-retainers ofthe tire-upsetting machine with a contracted slotted portion, a, terminating' in an enlarged eye, b, substantially as and for` the purposes described. -l

2. The use of transverse wedge-keys with V edges, in combination with the wroughtthe anvil B, sub-r stautiall y as described.

L. A. DOLE.

Witnesses:

R. H. GARRIGUEs, V. N. REAPER. 

